Central-draft lamp



(No Model.)

W. M. HOERLE.

CENTRAL DRAFT LAMP. No. 432,311. Patented July 15,1890.

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VUNITED STATES PATENT OFFICE.

WILLIAM M. I-IOERLE, OF ALLEGHENY, ASSIGN OR TO THE PITTSBURG BRASS COMPANY, OF PITTSBURG, PENNSYLVANIA.

CENTRAL-DRAFT LAM P.

SPECIFICATION forming part of Letters Patent No. 432,311, dated July 15, 1890.

Application filed May 13, 1889.

To @ZZ whom, it may concern:

Be it known that I, WILLIAM M. HOERLE, a resident of Allegheny, in the county of Allegheny and State of Pennsylvania, have'invented a new and useful Improvement in Central-Draft Lamps; and4 I do hereby declare the following to be a full, clear, and exact description thereof.

Myinvention relates to central-d raft lam ps, its principal object being to provide a wickraising device which will hold the wick securely on the wick-tube and release the said wick when the upper` end of the wick-tube passes the upper end of the central drafttube, so that the wick may be properly adj usted.

Its further object is to provide a means of consuming the ill-smelling and disagreeable vapors which arise from the central drafttube and are diffused into the room or apartment, due to the oil which collects upon the interior surface of the central draft-tube.

Its further objects are also to simplify and cheapen the manufacture of the lamps by constructing the burner and chimney-gallery all in one piece and adapted to rest upon the fount of the lamp, and-to improve the construction of the lamp in other particulars.

To these ends my invention comprises certain improvements in the Wick-raising device and in the name-spreader, as will be hereinafter particularly set forth and claimed.

My invention also consists in certain improvements and combination of parts, all of which will be more fully hereinafter set forth. To enable others skilled in the art to make and use my invention, I will describe the same more fully, referring to the accompanying drawings, in which- Figure 1 is a side View, partly broken away,

of a lamp embodying my invention. Fig. 2 1s a verticalcross-section of same. Fig. 3 is Serial No. 310,508. (No model.)

the clutches; Fig. 7, a like view showing the wick released, and Fig. S a view of the wickraising bar.

Like letters of reference indicate like parts in each.

I will describe my invention with reference to a common form of lamp, in which a is the .fount or bowl of the lamp, having invits base c the series of openings a2, through which vthe air can pass to a central draft-tube '19, se-

cured within the fount a in a suitable manner. Encircling the central draft-tube b is the wick-raising tube c, which is adapted to Inove freely on said central draft-tube b, and around which the wick CZ fits snugly. Around the upper end of the wick-raising tube c are formed a series of journals e, upon which are j ournaled a corresponding number of clutches f, provided with the teeth f The clutches f are so journaled on the journals e that when the wick-raising),` tube cis raised so that its upper end is above the top of the tube l), as shown in Fig. 7, the clutches f will fall back within the tube c and over the top edge of the tube b, as shown in Figs. el. and 7, and so release the wick; but when the wick-raising tube c is lowered the upper end of the central draft-tube l? will raise the clutches f on their journals and force the teeth j" beyond the outer face of the wick-raising tube, so that they extend out at an angle to th'e tube and so grasp the wick, as shown in Figs. 2, 3, and 7.

To raise and lower the Wick-raising tube c, I employ a bar k, made of wire or other suitable material, having the bent arm 1.5 at the lower end thereof, which is securely attached to the tube c, while a shoulder k2 is formed on the bar 7s just beyond the bent arm 7.o. This bar Zt passes up through a suitable opening c3 in the top piece a* of the fount, and is provided with a suitable handle k3, by means of which the bar 7e is drawn up or pushed down through the opening a3 to raise raised position. Any suitable means, however, of raising said tube may be employed.

The llame-spreader Z is composed of the perforated tube l', upon the top of which rests the cap Z2, without perfor-ations, whose edges extend out beyond the perforated tube l', and so assist in spreading the llame. As fully shown in Fig. 3, this cap I? has an annular lip Z3 extending down from it, within which the perforated tube Z is secured by expanding the body of the tube against the inner surface of the lip, and consequently the llame-spreader and its top plate can be formed at low cost, and the lip l can extend out beyond the body of the llame-spreader to form a bead and assist in spreading the llame. A band or ring m, constructed of brass or other suitable material, encircles the spreader Z at its lower end, said band m having the flanges m m3 extending out from its ends, t-he flange m being at the base of the tube and the flange fnl3 at the upper end thereof, said flanges having indentations or perforations m2 thereon, in order that part of the air coming from the central draft-tube Z1 may pass through the indentations m2 between the outer surface of the band m and the inner surface of the central draft-tube Z) when the spreader Z rests within the central draft-tube. In case any unconsumed oil passes over the edge of the central draft-tube and descends on the inner face thereof and becomes heated by the flame, a very disagreeable and ill-smelling vapor will arise from thisunconsumed oil; but the air coming up through the indentations m2 and through the flame-spreader Z will drive this ill-smelling vapor into the flame, where itwill be consumed.

The burner 'a is perforated to allow the air to circulate freely around the flame, and has formed integral therewith the chimney-gallery o, which it has heretofore been customary to form separate from the burner, the two being secured together by flanging or depressing the metal, or being soldered together, thus increasing the cost, and in the latter case the heat of the lamp rendering the connection insecure.

I am enabled to stamp the burner and gallery from a single piece of metal, and subsequently to perforate both parts at the same time, and so greatly reduce the cost thereof. Clips p support the chimney within the gallery o. The combined burner and gallery rests within a suitable seat in the top piece a of the fount.

When my improved lamp is in use, and it is desired to insert the wick (Z on the wickraising tube, the tube c is first raised by the bar 7.: until the shoulder if? rests upon the edge of the opening a4 on the top piece a". lVhen the tube c is in this raised position, with its upper end above the upper end of the central draft-tube b, the clutches f will fall back of their own accord into the interior of the wickraising tube, and the wick d may then be readily adjusted on the tube c. Then the wick has been adjusted on the wick-raising tube, the bar la is lowered, and the tube c, secured thereto,is drawn down thereby, so that as the said tube descends on the central drafttube b the upper end of said central draft-tube will come in contact with the clutches f and force up said clutches until the teeth thereof are pressed into and grasp the wick on all sides and hold it securely, so that when the wick is lowered it is held evenly on all sides and is prevented from canting. The lamp is now ready for lighting, and when lighted the air entering the openings a2 in the base a of the lamp passes up through the central draft-tube Z) and into the flamespreader Z, while a part of sadair also passes up through the indentations m2 into the annular space between the outer surface of the band m and the inner surface of the central draft-,tubo t), which tends to drive the illsmelling vapor arising from any oil on the inner surface of the central draft-tube into the llame, as aboveset forth, when it will be consumed. The wick is thus raised and lowered, as found necessary in adjusting it, being held even by the clutches on the wiekraising tube, and being therefore fed evenly as it is burned. When it has been consumed to a point where it is necessary to raise it on the wick-raising tube, the bar k is raised, and with it the wiclvraising tube, until the shoulder k2 rests upon the edge of the opening a3. As the tube c is raised the clutches, grasping the wick on all sides, will raise said wick evenly, and when the upper end of the tube c has passed beyond the upper end of the central draft-tube the teeth of the clutches f will fall out of the wick, so releasing it, the clutches falling back into the'position shown in Fig. 7, when the wick may be raised and adjusted on the wick-raising tube without catching on or engaging with the clutches, and as soon the wick-raising tube is lowered the clutches again engage with the wick and carry it down.

The lamp is simple 'in construction and provides an even adjustment of the wick, as well as overcomes disagreeable odors from the lamp, and it can be constructed at low cost.

lVhat I claim as my invention, and desire to secure by Letters latent, is-

l. In a lamp, the combination of tllcwiekraising device and a bar 7c connected thereto and extending upwardly through the fountbody and having the shoulder k2, adapted to engage with and rest upon the body of the fo unt, substantially as and for the purposes set forth.

2. In' a lamp, the combination, with the cen tral draft-tube, of the wick-raising tube surrounding the same, and the bar 7o connected to the wick-raising tube and extending upwardly through the fount-body and having the shoulder k2, adapted to engage with and rest upon the forint-body, substantially as and for the purposes set forth.

IOO

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3. In :L lamp, the combination, With the een- In testimony whereof I, the said WILLIAM tlal draft-tube, of the flame-spreader fitting M. HOERLE, have hereunto set my hand. therein, formed of the band or tube m,- having' a ange m at the base, the tube l" above 5 said band, and a flange m3 between the tube Witnesses:

and band, substantially as and -forl the pur- "ROBT- D. TOTTEN, poses set forth. J. N. COOKE.

VILLIAM M. HOERLE. 

